[#68137] improve semantics of manpages — "Anthony J. Bentley" <anthony@...>
Hi,
1 message
2015/02/17
[#68144] Re: Future of test suites for Ruby — Anthony Crumley <anthony.crumley@...>
FYI...
4 messages
2015/02/17
[#68343] [Ruby trunk - Bug #10916] [Open] What the Ruby? SegFault? — ruby@...
Issue #10916 has been reported by why do i need this acct just to create a bug report.
5 messages
2015/02/27
[#68373] Re: [Ruby trunk - Bug #10916] [Open] What the Ruby? SegFault?
— "Martin J. Dürst" <duerst@...>
2015/03/02
> * Author: why do i need this acct just to create a bug report
[#68358] [Ruby trunk - Bug #10902] require("enumerator") scans LOAD_PATH 2x on every invocation — [email protected]
Issue #10902 has been updated by Aman Gupta.
3 messages
2015/02/28
[ruby-core:68122] [Ruby trunk - Bug #10855] [Open] [PATCH] Matrix#inverse returns matrix of integers whenever possible
From:
lito.nicolai@...
Date:
2015-02-15 19:08:16 UTC
List:
ruby-core #68122
Issue #10855 has been reported by Lito Nicolai.
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Bug #10855: [PATCH] Matrix#inverse returns matrix of integers whenever possible
https://bugs.ruby-lang.org/issues/10855
* Author: Lito Nicolai
* Status: Open
* Priority: Normal
* Assignee:
* ruby -v: 2.3.0
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
Currently, Matrix#inverse returns a matrix of Rationals, even when each
element has a denominator of 1. This leads to
> x = Matrix.identity 3
=> Matrix[[1, 0, 0],
[0, 1, 0],
[0, 0, 1]]
> x.inverse
=> Matrix[[(1/1), (0/1), (0/1)],
[(0/1), (1/1), (0/1)],
[(0/1), (0/1), (1/1)]]
Even though `Matrix.identity.inverse` should be identical to `Matrix.identity`.
This patch guarantees that Matrix#inverse will return a matrix of integers
whenever it can. To maintain uniform types across a matrix, the conversion
is only performedif *every* element can be converted to an integer.
---Files--------------------------------
matrix_inverse_to_integer.patch (2.14 KB)
--
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